Home / 354,938.48-490,333.26-307,108.79

Finding the Fourth Proportional to 354,938.48, 490,333.26 and 307,108.79

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Solution

The fourth proportional to 354,938.48, 490,333.26 and 307,108.79 is: 424,258.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,938.48 : 490,333.26 = 307,108.79 : x
  2. Step 2: Convert to fraction form
    354,938.48/490,333.26 = 307,108.79/x
  3. Step 3: Cross multiply
    354,938.48x = 490,333.26 × 307,108.79
  4. Step 4: Simplify right side
    354,938.48x = 150,585,654,797.54
  5. Step 5: Solve for x
    x = 150,585,654,797.54/354,938.48
  6. Step 6: Final answer
    x = 424,258.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.